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/*=========================================================================
Program: Visualization Toolkit
Module: vtkThresholdTextureCoords.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
// .NAME vtkThresholdTextureCoords - compute 1D, 2D, or 3D texture coordinates based on scalar threshold
// .SECTION Description
// vtkThresholdTextureCoords is a filter that generates texture coordinates for
// any input dataset type given a threshold criterion. The criterion can take
// three forms: 1) greater than a particular value (ThresholdByUpper());
// 2) less than a particular value (ThresholdByLower(); or 3) between two
// values (ThresholdBetween(). If the threshold criterion is satisfied,
// the "in" texture coordinate will be set (this can be specified by the
// user). If the threshold criterion is not satisfied the "out" is set.
// .SECTION Caveats
// There is a texture map - texThres.vtk - that can be used in conjunction
// with this filter. This map defines a "transparent" region for texture
// coordinates 0<=r<0.5, and an opaque full intensity map for texture
// coordinates 0.5<r<=1.0. There is a small transition region for r=0.5.
// .SECTION See Also
// vtkThreshold vtkThresholdPoints vtkTextureMapToPlane vtkTextureMapToSphere
// vtkTextureMapToCylinder
#ifndef __vtkThresholdTextureCoords_h
#define __vtkThresholdTextureCoords_h
#include "vtkDataSetAlgorithm.h"
class VTK_GRAPHICS_EXPORT vtkThresholdTextureCoords : public vtkDataSetAlgorithm
{
public:
static vtkThresholdTextureCoords *New();
vtkTypeMacro(vtkThresholdTextureCoords,vtkDataSetAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Criterion is cells whose scalars are less than lower threshold.
void ThresholdByLower(double lower);
// Description:
// Criterion is cells whose scalars are less than upper threshold.
void ThresholdByUpper(double upper);
// Description:
// Criterion is cells whose scalars are between lower and upper thresholds.
void ThresholdBetween(double lower, double upper);
// Description:
// Return the upper and lower thresholds.
vtkGetMacro(UpperThreshold,double);
vtkGetMacro(LowerThreshold,double);
// Description:
// Set the desired dimension of the texture map.
vtkSetClampMacro(TextureDimension,int,1,3);
vtkGetMacro(TextureDimension,int);
// Description:
// Set the texture coordinate value for point satisfying threshold criterion.
vtkSetVector3Macro(InTextureCoord,double);
vtkGetVectorMacro(InTextureCoord,double,3);
// Description:
// Set the texture coordinate value for point NOT satisfying threshold
// criterion.
vtkSetVector3Macro(OutTextureCoord,double);
vtkGetVectorMacro(OutTextureCoord,double,3);
protected:
vtkThresholdTextureCoords();
~vtkThresholdTextureCoords() {};
// Usual data generation method
int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
double LowerThreshold;
double UpperThreshold;
int TextureDimension;
double InTextureCoord[3];
double OutTextureCoord[3];
//BTX
int (vtkThresholdTextureCoords::*ThresholdFunction)(double s);
//ETX
int Lower(double s) {return ( s <= this->LowerThreshold ? 1 : 0 );};
int Upper(double s) {return ( s >= this->UpperThreshold ? 1 : 0 );};
int Between(double s) {return ( s >= this->LowerThreshold ?
( s <= this->UpperThreshold ? 1 : 0 ) : 0 );};
private:
vtkThresholdTextureCoords(const vtkThresholdTextureCoords&); // Not implemented.
void operator=(const vtkThresholdTextureCoords&); // Not implemented.
};
#endif
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